In this manner the aryl substituent can act as a directing group.
2.
She remained active for many years, being particularly associated with sex education, and was directing groups aged 94.
3.
The above figure shows the effects of a carboxylic acid directing group on the overall reactivity of the reaction.
4.
For meta-directing groups ( electron donating group or EDG ), ? more positive than ? meta and ? para.
5.
Homoallylic alcohols are effective directing groups for epoxidations in both cyclic and acyclic systems for substrates which show hydrogen bonding.
6.
It has been shown that a dihedral angle of 120 best directs substrates which hydrogen bond with the directing group.
7.
:Directing patterns around substituted benzene derive from the way the directing group affects the electron density patterns in the conjugated pi-system.
8.
The figure above demonstrates the use of a pyridine directing group to activate selectively a C-H bond to form a C-halogen bond.
9.
Directing groups on aromatic compounds and heterocycles provide regioselective sites of metalation, and directed ortho metelation is an important class of metalation reactions.
10.
U . S . Secretary of State Warren Christopher said Tuesday that Iran was deeply involved with financing, training or perhaps even directing groups such as Hamas.
मोबाइल